HIGHLIGHTS-Tennis-U.S. Open day seven

Highlights of the seventh day at the U.S. Open, the final Grand Slam tournament of the year, on Sunday (times GMT):

2000 SERENA TOO STRONG FOR MARTIC

Eighth seed Serena Williams fought through the pain of a twisted ankle which needed lengthy treatment to beat Petra Martic of the Czech Republic 6-3 6-4 in the last 16. The American former world number one scorched the court with 37 winners and will face China's 18th seed Wang Qiang in the quarter-finals.

1940 DIMITROV BEATS DE MINAUR

Bulgaria's Grigor Dimitrov beat Australia's Alex de Minaur 7-5 6-3 6-4 to set up a quarter-final clash with Roger Federer.

Dimitrov won 79% of his first-serve points and hit 31 winners to reach the U.S. Open last eight for the first time.

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1915 KONTA INTO QUARTERS AFER BEATING PLISKOVA

Britain's Johanna Konta reached her third consecutive Grand Slam quarter-final after beating third seed Karolina Pliskova 6-7(1) 6-3 7-5. The 16th seed hit 45 winners, nine more than Pliskova, and won nine points at the net. She will face either Elina Svitolina or Madison Keys in the last eight.

1736 FEDERER CRUISES PAST GOFFIN

Third seed Roger Federer was barely tested in his fourth- round match against David Goffin, beating the Belgian 6-2 6-2 6-0 at Arthur Ashe Stadium to advance in 79 minutes.

Federer converted nine of 10 breakpoints, won 19 net points and hit 35 winners (27 more than Goffin) to move into his 56th Grand Slam quarter-final.

1632 BARTY UPSET BY WANG IN STRAIGHT SETS

Second seed Ash Barty lost 6-2 6-4 to China's 18th seed Wang Qiang, who advanced to her first Grand Slam quarter-final by dispatching the French Open champion in 82 minutes. Wang claimed victory on her third match point after Barty had saved two on her own serve, but 39 unforced errors by the Australian, who did not convert a single break point, saw her make an earlier than expected exit in New York.

1510 PLAY UNDERWAY IN NEW YORK

Play began on Sunday in cloudy conditions with the temperature hovering around 22 degrees Celsius (71.6°F) and a forecast high of 25C, with rain expected later in the day.

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